Hoisting tackle



Nov.. 8, T927.

w. w.` wlLs'oN HOI STING IACKLE Filed July 24, 1925 2 sheets-shag?. 1

@Q y, mr N III W ai 2J Nov. 8, 1927.

w. w. wlLsoN Y HOISTING TCKLE Filed July 24, 1923 2 l Sheets-Sheet 2 rdm0k m n er. wm ,10 JM m .m .m W

Patented Nov. 1,927. l I

. 'without limiting my invention to 'this par ings in which- UNITEDSTATES "1,648,158 PATENT OFFICE.

WEBSTER WILSON, OF LOS ANGELES, CALIFORNIA.

HOISTING TAOKLE.

This invention relates most particularly to well drilling apparatus andto hoisting tackle for handlingy casing, pipe, and drill pipe or drillstein. Although itis, as will he un.- derstood from the device-itself,adapted for use generally in connect-ion with handling well pipe andcasing, the particular form of the device herein illustrated andhereinafter described indetail has been designed with a view toexpeditiously and. safely handle a drill pipe and drill stem inI rotary`drilling rigs. So in the following specific-ation, but

ticular use,l I shall describe the invention as it i's used for handlingdrill pipe in a rotary drilling rig.

Heretofore it-has been common to handlel such drill pipe with anelevator lhaving a bail' or va pair of hails. and with a hoisting tacklethat has 'a hook engaging the hails.

After the drill pipe is lowered in the well and if it becomes necessaryto add a new,

length, the elevator previously in use s left standing on a support atthe floor, the hook is disengaged and then engaged'in the hail or hailsof a second elevator in which the next length is held. The swivel watercon` nection tothe upper en'd of the previous length isdisconnected andconnected to the top .end of the next length, the next length is screwedinto'the upper endof the previous length,` and then the elevator belowis disengaged and the drilling. operation and the lowering of the pipeis resumed. In these operations the time element is of very greatimportance as it is essential in rotary drilling operations to keep the'water fiow4 as vnearlycontinuous as possible'. .The disengagement andengagement of theI hook are usually rather awkward operations and attimes somewhat dangerous. Furthermore, the hooks although constructedvery heavily, occasionally fail and sometimes with disastrous results. l

It is a general. object of the ,invention to provide a device to takethe place of the hook in such hoisting tackle, .and that this he quicklyand easily disconnected from or connected to an elevator, and ythat isof comparatively light weight and yet strong and safe. Other objectsofthe invention will behest understood from the following vdetaileddescription reference for thisYspur-L pose being had to theaccompanying'draw- Application led July 24, 1923. Serial No. 653,586.

Fig. 1 is a view partly in elevation and partly. in centralverticalsection; Fig. 2 is a side elevation of the device; Fig. 4 is ahorizontal sectihn on line 3-3 of Fig. 1;

Fig. 3 is a similar section showing the elevator halves opened out;4Fig. 5 is an eleeol vation showing a modified form; and Fig.

Gis a side elevation of the same. v

In/the drawings I show, in my complete combination, a `pipe elevator Eof the general design and with appurtenances such as shown in the patentof E. C. Wilson,1 No.

1,498,141, granted June 17, 1924, on Well ele- Vators and in the patentof Charles E. lW'ilcox. No. ,1.511,699,` granted October 14, 1924, onWell pipe elevators. However, except in some particulars as will beunderstood from the following statements the particular type of elevatorused `.here is of no special Consel quence. This type of elevator hastwo bail lugs 10 on its opposite hinged halves and the two hails 11 arein the form. of lin-ks and their lower ends passed through openings 12in the hail lugs. These openings 12 have diagonal slots 13, so placedandof such size that if the hails are laid down toward a horizontalposition (both'in the same direction-the two slots here being parallel)then they may hey easily disengaged from the elevator hy slipping one oftheir straight sides out through slots 13. In their normal September18.` 1923. .entitled Elevators. Y.

Such formation of the lugs allows the elevator halves to he swung openon their hinge 15 without swinging or twisting the hails 11 about avertical axis 'and thus enables the elevator halves to he opened whilethe upper ends of the hailsv are in engagement with swivel S. Thedetails of this arrang-` ment need not however, he gone.. into here assuch structure is the subject matter of mysaid patent. Figs. 3 and 4show elevator halves in closed and open position and show .howl thehails swing outwardly at their lower ends without twisting about avertical axis and thus show how the hails may remain in engagement withthe relatively small bail receiving openings of the swivel while theelevator is being opened and closed. This is-of some decided advantage,and it is also advantageous to have the upper ends of the bails fitthrough the swivel lugs comaratively closely (instead of being in a'arge loose opening or instead of being merely hooked into a hook) andthe structure or elevator which I here describe allows of theseadvantages and at the same time allows the elevator to be easily openedand closed.` i

Swivel S is the part that takes the place of the 'ordinarilyused hook.This swivel has an eye bolt 3() carrying afball race 31y and the body 32of the swivel is directly supported by a spring 33 which isv carried onthe upper ball race 34. Body32 has bail lugs 35 with bail receivingopenings 36 just slightly larger than the bails so that the bails areheld not tightly but yet comparatively snugly and without any greatlooseness.v

These bail receiving openings may be constructed in the same manner asbefore ex plained in connection with elevator E; that is, they may havediagonal slots through which the bails may easily be disengaged from thelugs; 0r the bail removal slots 37 may have closureblocks 38 that maynormally be held in place by bolts 39. It is the particular object inthis specific part of the construction as well `as in the connection ofthe bails to the elevator, to provide that the bails shall be securelyheld but atthe same time shall be quickly and easily removable.

' .normally held in'engagement with the eleva-` I may' also mention herethat it is not absolutely necessary for the lbails to be removable romboth the elevator and the swivel; easy removability fromeither mayanswer ordinarily the purposes for which the device is intended; but itmay be desirable in some instances to have the bails removable from bothasl it may sometimes be desirable in op# eration to disengage the bailsfrom the elevator and then at other times to disengage them from theswivel.

In Fig. 5 I show the elevator havin a removable block 13' to close slot13 leadlng tof the openingulthrough which bail 1l passes. In this formthe bails are easily removed byremoving block 13a and then moving thelower ends of the bails downwardly and outwardly, it not being necessaryto move the bails to diagonal position, as in Fig; 2, for removal and inthis form the blocks might be omitted, the bails being tor by pullingvup into openings 1 2`behind overhanging wall 12a. In this form the lugs10 may also be curved to attain the action ,illustrated in Figs. 3and4.'

. It is unnecessary for me to point out how l and why this constructionis' particularly strong, safe and reliable, -as it can be readily thenont of the way, as regards the elevator standing on the floor andsupporting the pipe in the well, and also because' then one set of bailssuiiices. It will be readily understood that the bails may beinterconnected very quickly and without any trouble. When,

the device is inuse, the spring 33 absorbs all shocks and eases oilstrains on the pipe, hoisting tackle, line, derrick and hoistingapparatus. y f Having described a invention, I claim: y v

1. In combination,l a pipe elevator with link receiving lugs, aconnector comprising a stem having means at its upper end forconpreferred form of my nection with a tackle block, a yoke disposedrotatably about said stem and having laterally extending lugs providedwith link reaceiving portions, means on the lower portion of the stemfor sustaining Said yoke, and links extending between and engaging `theelevator lugs and the yoke lugs.

2. In combination, a pipe elevator with two opposite link receivinglugs, a connector comprising a stem having means at its upper end forconnection withva tackle block, a yoke disposed rotatably andlongitudinally movable about said stem and having two opposite laterallyextendingy lugs provided with link receiving portions, resilient meanssup'- ported on the lower portion-of vthe stem for sustaining said yoke,and a pair of links extending between and engaging the yoke lugs and theelevator lugs.

3. In combination, a pipe elevator with link receiving lugs, a connectorcomprising a stem having means at its upper end for connection with atackle block, a `yoke disposed rotatably about said stem and havinglaterally extending lugs provided with link receiving portions, meansonl the lower portion of the stem for sustaining said yoke, and linksextending between and engaging the elevator lugs and the yoke lugs, saidlinkstwo opposite link receiving lugs, a connector comprising a stemhaving means at its upper end for connection with a tackle block, a yokedisposed rotatably and longitudinally movable about said stem and havingtwo yoppositeI laterally extending lugs provided with link receivingportions, resilient means supported -on the lower portion ofthe stem forsustaining said yoke, and a pair of links exY tending between and,engaging the yoke lugs and thev elevator lugs, said links beingremovable from the elevator-lugs.

y5. A block and `elevator connector, com' prising a cylindrical stemhaving va head and eye at the upper ortion thereof, a yoke disl posedrotatably a out said 'stein Aand having block, a yoke fitting rotatablyVabout said laterally extending lugs provided with linkreceivinglgrooves, andymeans on the lower portion of the .stem for sustainingsaid:` yoke.

6. A- block and elevator connector, comprising a cylindrical 'stemhaving means at its upper end for connection with aV tacklestem, saidyoke having opposite laterally ex- 'l tending lugs provided .at'` theupper sides kthereof with link-receiving grooves, means .on the lowerportion of the stem 4for sustaining said yoke, and lmeans for retainingelevator-links in said grooves of the yoke? lugs. A block; and elevatorconnector, com-f prising ay cylindrical Stem, a yoke slidably androtatably disposed upon said stem, said yoke havingopposite laterallyextending lugs adapted for engagementby elevator links, means at .theupper end of the stem for connecting the same with a tackle-block aspring disposed about. the lower portion of the stern and yieldablysupporting the yoke prising a stem havingmeans at its upper end forconnection with a tackle block, a yoke disposed rotatably about saidstem and hav-J ing oppositely laterally extending lugs pro-- videdIwith, link) receiving portions, and

means on the lower portion of the stemffor sustaining said yoke.

10, A block andjelevator connector, comprising a stem having means atits upper end for 'connection with a tackle block, a yoke ldisposedabout saidstem and movable rotatably and longitudinally thereof andhaving laterally extending lugs provided with link receiving portions,and resilient means supported on the lower portion lof said stem forresiliently sustaining said.= yoke.

In witness that I claim the fore oing have hereunto subscribed my name tis 14th day of J uly', 1923.

- WILLIAM WEBSTER wILsoN.

portion of thefstem for sustaining Said

